<template>
  <el-container class="home_container">
  <el-header>
    <!-- 头部区域 -->
    <div>
      <img src="../assets/logo.png" alt="">
      <span>双猴科技后台管理</span>
    </div>
    <el-button type="info" @click="logout">退出</el-button>
  </el-header>
  <!-- 页面主体区域 -->
  <el-container>
    <!-- 左侧边栏 -->
    <el-aside :width="isCollapse ?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <!-- 侧边栏菜单区域 -->
        <el-menu
        background-color="#333744"
        text-color="#fff"
        active-text-color="#409bff"
        :collapse="isCollapse"
        :collapse-transition="false"
        :router="true"
        :unique-opened="true"
        :default-active="activePath"
        >
        <!-- 一级菜单 -->
        <el-submenu :index="item.id+'' " v-for="item in menulist" :key="item.id">
          <!-- 一级菜单模板区 -->
          <template slot="title">
            <!-- 图标 -->
            <i :class="iconsObj[item.id]"></i>
            <!-- 文本 -->
            <span>{{item.authName}}</span>
          </template>
          <!-- 二级菜单 -->
           <el-menu-item :index="'/'+subItem.path" v-for="subItem of item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
             <!-- 二级菜单模板区 -->
          <template slot="title">
            <!-- 图标 -->
            <i class="el-icon-menu"></i>
            <!-- 文本 -->
            <span>{{subItem.authName}}</span>
          </template>
           </el-menu-item>
        </el-submenu>
      </el-menu>
    </el-aside>
    <!-- 右侧内容区域 -->
    <el-main>
      <!-- 路由占位符 -->
      <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>
<script>
export default {
  data() {
    return {
      // 是否折叠侧边栏
      isCollapse:false,
      menulist:[],
      // 循环改变icon
      iconsObj:{
        '125':'iconfont icon-user',
        '103':'iconfont icon-tijikongjian',
        '101':'iconfont icon-shangpin',
        '102':'iconfont icon-danju',
        '145':'iconfont icon-baobiao'
      },
      // 被激活的链接地址
      activePath:''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    //获取所有的菜单
    async getMenuList(){
      const {data:res}=await this.$http.get('menus')
      // console.log(res)
      if(res.meta.status !=200)return this.$message.error(res.meta.msg)
      this.menulist =res.data
    },
    logout() {
       window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 侧边栏折叠打开
    toggleCollapse(){
      this.isCollapse = !this.isCollapse
    },
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath = activePath
    }
  },
}
</script>
<style lang="less" scoped>
.home_container{
  height: 100%;
}
.el-header{
  background-color:#373d41 ;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color:#ffffff;
  font-size: 20px;
  >div{
    display: flex;
    align-items: center;
    img{
      height: 50px;
      margin-left: 15px;
    }
    span{
      padding-left: 15px;
    }
  }
}
.el-aside{
  background-color: #333744;
  .el-menu{
    border-right: none;
  }
}
.el-main{
  background-color: #eaedf1;
}
.toggle-button{
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #ffffff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
.iconfont{
  margin-right: 10px;
}
</style>